Lawn sprinkler



July 24, 1962 G. L. TURNER 3,045,923

LAWN SPRINKLER Filed Oct. 17, 1960 3 Sheets-Sheet :L

!I|ll|llllllIlllllllllll:

INVENTOR Crone: L. TURNER BY CWM ORNEY July 24, 1962 G. L. TURNER 3,045,923

LAWN SPRINKLER Filed Oct. 17, 1960 3 Sheets-Sheet 2 l as" INVENTOR Gzoacc L. TURNER BY QUM ORNEY July 24, 1962 Filed Oct. 17, 1960 G. L. TURNER LAWN SPRINKLER 5 Sheets-Sheet 3 A a \IJIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIW 5:7-

INVENTOR Gconcz L. TuRNER BY 619M RNEY United States Patent Ofi 3,045,923 Patented July 24, 1962 ice 3,045,923 LAWN SPRINKLER George L. Turner, Hickory Corners, Mich., assignor to H. B. Sherman Manufacturing Company, Battle Creek, Mich., a corporation of Michigan Filed Oct. 17, 1960, Ser. No. 63,166 16 Claims. (Cl. 239-230) The present invention relates broadly to water distributing or sprinkling devices, and in its more specific phases to a horizontally pivoted Wave sprinkler of impulse driven type.

The common form of horizontally pivoted wave sprinklers utilize a horizontally elongated tube, slightly arched upward in its center, and provided with a series of water outlet openings in a row lengthwise of said tube on its upper side when the tube arch is in its uppermost position. A continuous operation water motor is incorporated in the assembly at the inlet end of the sprinkling tube with a linkage moved through the operation of said motor for varying the extent of the back and forth are of movement of said tube. This construction is non-adjustable as to width of the area sprayed, is relatively long so as to be bulky for shipment and storage, and such construction coupled with a relatively costly 'Water driven motor and operating linkage makes these 'Wave sprinklers very expensive when compared with the conventional rotary sprinkler, which universally has a vertical pivot axis of rotation. It was a recognition of the need and advantages of wave sprinklers and the fact that those on the market were non-adjustable as to width of the area sprayed as well as relatively bulky and space consuming, in addition to being more complicated and expensive than desirable, which led to the conception and development of the present invention.

Accordingly, among the objects of the present invention is the provision of a compact wave type sprinkler which completely eliminates the conventional continuously driven water motor now used on such sprinklers.

Another object of the present invention is to provide a horizontally pivoted impulse driven type wave sprinkler.

Another object is to provide a horizontally pivoted impulse type sprinkler having a generally upward extending adjustable outlet member for spraying water, and

which outlet member delivers said water in a fan pattern.

A further object is to provide a sprinkler having an outlet nozzle member mounted on a horizontal pivot and adapted to deliver a substantially fan shaped spray at the outlet from said nozzle, said assembly having an oscillatable arm means supporting a flipper adapted to be impinged by said spray and to swing said arm gradually from side to side and shift said sprinkler body member carrying the outlet nozzle step by step first in one direction and then the other.

A further object is to provide a horizontally pivoted wave sprinkler of impulse type with an adjustable reversing mechanism so that the impulse member will first move the outlet portion of said sprinkler step by step in one direction to the end of its travel, and then reverse same and move it step by step to the end of its travel in the other direction, where reversal again takes place to start the next cycle of operation.

A further object of the present invention is to provide an improved type of reversing mechanism for impulse type sprinklers.

A further object is to provide a simplified means for adjusting the width of the area sprayed by an impulse type of wave sprinkler.

A further object is to provide an improved apparatus for adjusting the length of the sprinkling arc of a reversing wave sprinkler of impulse type as well as the position of the arc so as to control the location of the area sprinkled.

A further object is to provide adjustable means for varying the width of the sprinkling are independent of the length of same.

Still further objects and advantages of the invention will appear as the description proceeds.

To the accomplishment of the foregoing and related ends, the invention, then consists of the means hereinafter fully described and particularly pointed out in the claims, the annexed drawings and the following description setting forth in detail certain means for carrying out the invention, such disclosed means illustrating, however, but several of various ways in Whichthe principle of the invention may be used.

In the annexed drawings:

FIGURE 1 is a fragmentary side elevational assembly view of the improved impulse driven type of wave action sprinkler.

FIGURE 2 is a fragmentary side elevational assembly view of the improved impulse driven type of wave action sprinkler.

FIGURE 2 is a fragmentary top view of the sprinkler shown in FIGURE 1.

FIGURE 3 is a longitudinal fragmentary center sectional view as taken on line 33 of FIGURE 2 looking in the direction of the arrows.

FIGURE 4 is a fragmentary cross sectional view as taken on the line 44 of FIGURE 3, looking in the direction of the arrows.

FIGURE 5 is a fragmentary sectional view as taken on the line 5-5 of FIGURE 3.

FIGURE 6 is a top View of the spray nozzle and a projected edge view of same when adjusted for delivering a wide spray pattern, with said top view being as seen by looking in the direction of the arrow 6 in FIGURE 3.

FIGURE 6A is similar to FIGURE 6 but showing the spray nozzle adjusted for delivering a narrow width spray pattern.

FIGURE 7 is a fragmentary sectional view of theoscillating sprinkler head travel adjusting members as seen on line 77 of FIGURE 3, looking in the direction of the arrows.

FIGURE 8 is a bottom view of the sprinkler head direction reversing mechanism as seen when looking in the direction of the arrow 8 in FIGURE 4.

Referring to the drawings the horizontally mounted oscillating head 10 of the wave sprinkler 11 has been shown in considerable detail and will be rather specifically described, but it is to be understood that variations may be made within the spirit and scope of the invention as herein illustrated and described.

Referring to FIGURES 1 to 4, inclusive, it will be noted that the oscillating head 10 of wave sprinkler 11 is horizontally mounted on a suitable, fragmentarily shown, supporting base 12. Mounted directly on, and supported by, base 12, FIGURE 3, is a tubular water inlet member 13 having a shoulder 14- abutting the end of supporting base 12 which has an opening 15 therethrough and which closely fits the body portion 16 of said tubular member 13. The outer end of tubular member 13 is provided in conventional manner with a female hose coupling nut 17 and gasket 18 ready for joinder to a conventional water supply hose (not shown). The inner end of tubular inlet member 13 is provided with internal threads 19 into which is threadedly connected a hollow spindle 20 which passes through a suitable opening in base 12. This spindle is provided with a reduced diameter portion adjacent the threaded end of same and with a shoulder 21 which abuts the end face of supporting base 12 at said opening so that when tubular member 13 is screwed tightly onto hollow spindle 20 the shoulders 14 and 21 will tighten up against the opposite faces of supporting base 12. In order to prevent these parts from accidentally shifting, hollow spindle 2t) is provided with a small lug 22, FIGURE 3, which will engage in a corresponding sized notch 23 in the opening of supporting base r12 through which hollow spindle passes. Hollow spindle 20 is provided with an outwardly projecting continuous shoulder rib 24-, the use of which will be hereinafter set forth. The end of this spindle 2% remote from the inlet end thereof is closed and provided with an extending bearing boss or trunnion 25. Adjacent this hearing boss 25 are radial outlet passageways 26 through which water or the like is delivered for ultimate spraying as will be herein-after described.

Mounted on hollow spindle 20 is a hollow sleeve type assembly nut 27, FIGURE 3, which is moveable around hollow spindle 20' and provided at one end with a flange 28 which has flattened peripheral faces, preferably forming a hexagon, for engagement with a wrench. The outer face of the sleeve portion of this nut 27 has a threaded portion 29 on which is threadedly attached body 30 of the sprinkler assembly. This body 30 has a closed outer end with a bearing socket 31 closely but rotatably fitting bearing boss 25 of hollow spindle 20. The same end of body 30 is provided with a second bearing socket 32 for the reception of a frame spindle pin 33 the use of which will be hereinafter described. On the upper portion of body 30 adjacent the closed end of same is provided a boss 34, FIGURE 1, provided with internal threads 35, FIGURE 3, for the reception of a nozzle assembly 36.

The nozzle assembly 36 is in two parts, one of which is the nozzle body portion 37, FIGURE 6, which is hollow and provided with a threaded substantially cylindrical sleeve portion 38 which threadedly engages the internal threads 35, FIGURE 3, of body 30. This nozzle body portion has a pair of cars 39, or the equivalent, which may be used for turning nozzle body portion 37 into the internal threads of body 30'. These same cars 39 also serve the purpose of making nozzle body portion 37 easily removable for cleaning should any debris get into the sprinkler along with the water being delivered therethrough.

The top of nozzle'body portion 37 is provided with a cross slit 40, FIGURE 6, which is preferably slightly enlarged at its center 41 to improve the spray pattern and provide more uniform coverage of water on the sprayed area. On the very top of nozzle body portion 37 there is conventionally mounted a frictionally held but turnable nozzle cap'42 which is provided with a slit 43 which is preferably somewhat larger but similar in contour to cross slit in nozzle body portion 37. Where this nozzle cap 42 is made out of a resilient plastic, it can be formed as a snap-on nozzle cap hooking over a conventional outturned top rib on nozzle body portion 37, as shown in FIGURE 3. This cap and nozzle body portion should be of suitable size and fit to provide ready adjustment of these two parts relative to each other and yet be frictionally tight enough to prevent shifting under normal conditions of use. In FIGURE 6 the nozzle cap 42 is shown mounted on the nozzle body portion 37 in position for promoting maximum width of the spray pattern of the sprayed stream 44, while in FIGURE 6A the nozzle cap 42 has been turned 90 so as to deliver the narrowest width pattern of the sprayed stream 44. Nozzle cap- 42 may be adjusted to any intermediate position between those shown in FIGURES 6 and 6A to give prechosen widths of the sprayed stream 44, less than the (maximum and greater than the minimum.

The oscillating head 10 has a frame member 45 with an opening 46 closely but rotatably fitting hollow spindle 20 adjacent the inner end of supporting base 12. At the outer end of frame member 45 is an end closure plate 47 which may be anchored to frame member 4 5 by means of screws 48 or the like. Frame member 45 and closure plate 47 are preferably provided with protruding boss and hollow socket portions 49, FIGURE 3, to stabilize the frame member and end closure plate even though screws 43 loosen to a limited extent. End closure plate 47 has a projecting member 58 provided with a socket 51 into which frame spindle pin 33 is preferably tightly press fit so as to support end closure plate 47, and with it frame member 45, on the outer end of body member 30 due to frame spindle pin 33 rotatably' fitting bearing socket 32 in said body member 30.

It is thus to be seen that frame member 45, FIGURE 3, and end closure plate 47 form an assembly oscillatably supported on hollow spindle 20 and body member 30 carried thereby. Frame member 45 is provided with a projection 52, and end closure plate 47 with a second projection 53, with both of those projections being bored in alinement from their inner ends for the reception of a flipper shaft 54. This shaft is preferably a close fit, but yet freely rotatable in said alined bored openings in projections '52 and 53. Mounted on flipper shaft 54 is a flipper 55 which is of general downwardly pointed wedge shape as seen in FIGURE 4. This flipper 55 is recessed in its upper portion to provide a pair of ears 56 which act as stop members limiting the oscillating movement of flipper 55 about flipper shaft 54'. Said cars 56 bump against cross bar 57, which is between them, at the top of frame member 45.

On the outer end of body member 30, FIGURE 3, is mounted a relatively thin retaining collar 58 which preferably is made of plastic and snapped onto a suitable grooved portion on the end of body 30. This retaining collar forms an end stop for a centering spring 59. This centering spring 59 is provided at its opposite ends with downturned substantially parallel end members 6i and 61, FIGURE 5. Body member 30 has a projecting end 62, FIGURES 3, 4 and 5, and closure plate 47 has a reverse directed projecting end 63 with these two ends extending between end members 60' and 61 as shown in FIGURE 5. This centering spring '59 in combination with the projecting ends 62 and 63, which are between ends 60 and 61 of said spring, act as a centering mechanism for centering the flipper frame member 45 and its end closure plate 47 above the opening of cross slit 40.

The reversing mechanism 64, FIGURES 3 and 8, is mounted on the bottom face of body 30 by means of screws 65. This reversing mechanism 64 has a reversing frame 66 which is the portion directly fastened in fixed position to body 30 by means of said screws 65. This reversing frame 66 has a downwardly projecting channel portion 67 into which extends an arm 68, FIGURE 3, of reversing stop member 69. This stop member is mounted by a pivot means 70 on reversing frame 66. At the opposite end of said reversing stop member 69 from the point of its being mounted on said pivot means 70, V

are provided two upturned stop members 71 and 72, FIGURE 4. Pivotally mounted on channel portion 67 of the reversing mechanism 64 by means of pivot means 73 is a trigger member 74 which extends through slot 89 in frame member 45 and through slot 90 on base 12 and which trigger member 74 has an extending portion 75 adapted to contact reversing control members and 86 through which said reversing mechanism is actuated, as will be hereinafter set forth. This trigger member 74 has at a point near mid-length of same, an upwardly proecting post 76, FIGURE 3. The end of this post, preferably slides on the bottom face of reversing frame 66 with its movements limited by projecting stops 77 and 78, FIGURE 8.

A tension spring 79, FIGURE 3, hooks over arm 68 of reversing stop member 69 and its opposite end hooks over upwardly projecting post 76 of trigger member 74 so that movement of the trigger member from one side position to the other eccentrically loads reversing stop member 69 so that tension spring 79 will snap the reversing stop member 69 from its initial position to its opposite position. This situation and movement takes place with each movement of trigger member 74 substantially to the opposite ends of its travel. The upper edge of channel portion 67 has substantially at its midpoint a stop member 80, FIGURE 3, which acts to limit the amount of pivotal travel of reversing stop member 69 so that one of the stop members 71 or 72 of same will always be under one of the stop edges 81 or 82 of shroud 83, FIGURE 4, with this shroud 83 being an'inwardly extending portion of end closure plate 47.

Pivotally mounted on hollow spindle 20, FIGURE 3, and extending through opening 84 in the top of supporting base 12 are a pair of reversing control members 85 and 86, FIGURES 2 and 7. .-'Ihe inner face of each of the reversing control members 85 and 86, FIGURE 3, adjacent hollow spindle 20 is provided with a groove, with both grooves alined side by side and in which a pair of brings 87 are placed and which provide suflicient friction to hold the reversing control members 85 and 86 in whatever position they are adjustably preset.

Since each of the adjustable control members 85 and 86 may be individually adjusted to sprinkle various size areas, their adjusted position for a given water pressure will control the length and position of the area being sprinkled under normal operating conditions. This is accomplished by the oscillating head moving step by step, under normal operating conditions, to one end of its travel which, due to contact of end portion 75 of trigger 74 with a lower end portion of one of the reversing members 85 or 86 will gradually move trigger member 74 toward the end of its travel, at which time, when upwardly projecting post 76 of trigger member 74 passes pivot 70, and tension spring 79 is stretched to its maximum, will, by overcenter movement or toggle action, snap reversing stop member 69 to its opposite position where the other stop member 71 or 7-2 will shift and come under theother corresponding stop edge 81 or 82 of shroud 83, and limit the swing back of oscillating head 10 in one direction until trigger member 74 is gradually moved back to its opposite position where tension spring 79 will, by overcenter movement or toggle action, snap reversing stop member 69 back again to said one end of its travel and place the other of its stop members 71 or 72 under the corresponding edge of shroud 8'3 and then the cycle is again repeated.

Operation With the wave sprinkler 11 connected by female hose coupling nut 17 to a suitable hose (not shown) carrying water under operating pressure, to be delivered through the sprinkler, the operation of the assembly is as follows:

The length and position of the sprinkling area is first decided upon and then reversing control members 85 and 86, FIGURE 7, are adjusted relative to each other to meet this requirement. If the maximum width of spraying stream is wanted, the nozzle cap 42 is adjusted to the position shown in FIGURE 6, or if the narrowest width is wanted, then nozzle cap 42 is adjusted to the position shown in FIGURE 6A. Should an in between width be desired, then nozzle cap 42 would be correspondingly adjusted between the positions shown in FIGURES 6- and 6A.

With the mechanism of the wave sprinkler 11 thus adjusted, same is ready for the passage of water therethrough in conventional manner. This water will flow through tubular water inlet member 13 andhollow spindle 20 and out of same through radial outlet passageways 26 into annular'compartment 88, FIGURE 3, which opens into the bottom of nozzle body portion 3-7 which in turn opens into cross slit 40 for passage outward through slit.

43 of adjusted nozzle cap 42. The stream of water thus delivered will impinge upon one side or the other of flipper 55 to swing the top of oscillating head 10, for instance to the left as seen in FIGURE 4, against the tension of centering spring 59 to the end of the travel permitted by the spring resistance. The centering spring will then return the oscillating head 10 back until stop edge 82 of shroud 83 will bump the top of stopmember 72 of reversing stop member 69 of reversing mechanism 64, which is rigidly fastened to body member 30, and in so doing the inertia force generated will rotate the body portion 30 attached to assembly nut 27 a few degrees with such movement being resisted by the friction between the end of assembly nut 27 and shoulder rib 24. The amount of this friction, and the tightness of the seal against leakage, is determined by the pressure of the water which binds the two parts tighter and tighter together as the pressure is increased. With the oscillating head 10 thus returned to the right side and with stop member 72 in contact with stop edge 82 of shroud 83, this will have placed a little tension on centering spring 59 which will place a small amount of return force on the frame member 4 5 and parts carried thereby.

In this position flipper 55 will have its top shifted to the right so that the left hand ear 56 will be up against cross bar 57. This allows the stream of water issuing from cross slit to pass substantially parallel to the left side of flipper 55 as the centering spring 59 moves frame member and its attached-parts to the left. The stream of water then hits the right hand side of flipper and due to the angle of inclination of same imparts a push to the left which also simultaneously swings flipper 55 about flipper shaft 54 until the right hand ear '56: bumps the right hand side of cross bar 57 completing the application of force to turn frame member 45 and its attached par-ts to the left again to the end of travel permitted by the tension of centering spring 59. That centering spring then swings the frame member and its attached parts to the right once more and during this swinging movement flipper 55 will be tilted to the left with its right hand ear '56 remaining substantially against cross bar 57. With the flipper in this position when it reenters the water stream passing out of cross slit 40, such stream will first pass the right hand side of flipper '55 with practically no interference, but the moment the point of flipper 55 has passed through the stream of water being sprayed, this stream will hit the left hand side of flipper 55 and swing it to the right to give an inertia force making stop member 72 come forcibly into contact with stop edge 82 of shroud 83 thus shifting body 30 and the parts attached to same a few degrees in the same direction about spindle 26 once more. This series of blows, of course, gradually shifts body 30 and the parts attached to same step by step around hollow spindle 20, and this in turn brings the end portion of trigger member 74 up against the lower extension of reversing control member 86, this movement being continued until trigger member 74 reaches a point where tension spring 79, by overcenter movement or toggle action, as previously described, snaps reversing stop member 69 to its opposite position bringing stop member 71 of same once more under stop edge 81 of shroud 8 3. Once this has happened the same cycle applies except that the inertia forces which rotate body member 30 are in the opposite direction and oscillating head 10 then moves body member '30 step by step in the opposite direction until trigger member 74 with its end portion 75 in contact with reversing control member reaches the toggle'action point where spring 79 snaps reversing stop member 69 back to initial position which again reverses the direction of movement of the oscillating head to start the cycle of operation once more.

For convenience of describing and explaining the operation of the present mechanism, directional terms such as horizontal, vertical, top, downwardly, et cetera,

have been used. However same are not to be considered as limiting on the invention since the apparatus will operate in other positions than the horizontal one illustrated.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the lawn sprinkler and combinations therefore as herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention:

1. A Wave type lawn sprinkler, comprising a supporting base having -a bottom portion with an under face adapted to rest on a substantially horizontal surface such as a lawn, an inlet means for delivering water into said sprinkler, means for fixedly mounting and supporting said inlet means on said base, a hollow spindle including means extending from said inlet means over said base in a direction substantially parallel to the lawn contacting face of the latter, a body member rotatably fitting and receiving said hollow spindle, the axis of said body member lying in a plane substantially parallel to the bottom portion of said supporting base, a discharge nozzle opening out of the side of said body member and in a direction generally away from and at varying upward angles to the lawn contacting bottom portion of said base, said hollow spindle and body member having cooperating pas sageways for conducting the flow of a sprayable fluid from said inlet means to and through said discharge nozzle, an impulse motor rotatably mounted for movement of a portion of same back and forth at varying upward angles over said discharge nozzle and powered for intermittent step by step movement of said body member by the flow of sprayable fluid through said nozzle in contact with said portion moving back and forth over said nozzle, and reversing means which operates after said body member has been moved step by step by said impulse motor through a predetermined variable upward angle in either direction to then make said step by step application of power by said impulse motor move said body member in opposite direction.

2. A wave type lawn sprinkler as set forth in claim 1, wherein said discharge nozzle has an outlet which is relatively narrow and extends lengthwise of said body member, and wherein there is a nozzle cap with a cross slit end tightly but rotatably fitting the outlet end of said discharge nozzle, said cross slit of said nozzle cap being a little longer and a little wider than said nozzle outlet, wherein by varying the rotary position of said nozzle cap on said discharge nozzle this will vary the width of the stream of sprayable fluid passing out of the nozzle assembly.

3. A wave type lawn sprinkler as set forth in claim 1, wherein said hollow spindle has means for supporting one end of said body member and also has a trunnion bearing coaxial therewith and art the other end of said body member remote from said one end which is adjacent the inlet end of said spindle, and said body member has a bearing socket in the outer end thereof closely but rotatably fitting said trunnion bearing, whereby both ends of said body member are rotatably supported on said spindle in the step by step operating movements of the latter.

4. A wave type lawn sprinkler as set forth in claim 1, wherein the outer end of said body member has a coaxial bearing means, and said impulse motor has a bearing socket receiving said coaxial bearing with the latter thereby rotatably supporting the outer end of said impulse motor. v

5. A wave type lawn sprinkler as set forth in claim 3, wherein the outer end of said body member has a coaxial bearing means, and said impulse motor has a bearing socket receiving said coaxial bearing with the latter thereby rotatably supporting the outer end of said impulse motor.

6. A wave type lawn sprinkler as set forth in claim 1, wherein said reversing mechanism is mounted on the underface of said body member, said reversing mechanism having a projecting trigger member, pivot means for said trigger member, said impulse motor being open at its rear face so that the end of said trigger member can operably pass through same, a pair of adjustable and concentrically pivoted reversing control members mounted on said substantially horizontal hollow spindle portion within said supporting base and between which members the end of said trigger member extends and which pair of members control the extent of movement of the end of said trigger member, the step by step movement of said body member moving said trigger member on its pivot means to the end of its travel in either direction Where it actuates said reversing mechanism. v I

7. In a rotatably carried nozzle, impulse type, lawn sprinkler having an oscillatable frame assembly, a shroud having a pair of stop edges, said shroud being inside of and carried by said frame assembly, a reversing mechanism, means connecting said reversing mechanism with said nozzle for movement in unison with same, said reversing mechanism having a reversing stop member with a pair of fixedly spaced apart stop members projecting from same, a pivot means for said reversing stop member, stop means limiting the pivotal movement of said reversing stop member so that first one of said stop members and then the other will act as a stop for first one and then the other of said shroud stop edges each time the direction of rotation of said rotatable nozzle is reversed by said reversing mechanism, and means actuating said reversing mechanism to change the direction of rotation of said nozzle at predetermined positions of the latter.

8. In a rotatably carried and horizontally pivoted nozzle, impulse type, lawn sprinklerhaving a supporting base, a horizontally supported hollow spindle carried by said supporting base, a step by step nozzle rotating, oscillatable frame assembly mounted for horizontally pivoting on said hollow spindle, a direction of rotation reversing mechanism for said horizontally pivoted nozzle, said reversing mechanism having a pivoted, toggle action projecting trigger member, the combination therewith of a pair of reversing control members adapted to be engaged by said trigger member, and means concentrically pivoting said reversing control members on said hollow horizontally pivoted spindle, said reversing control members being individually adjustable relative to each other, whereby said reversing control members may be adjusted to predetermine the limits of rotary movement of said nozzle about its horizontal axis.

9. A lawn sprinkler of the vertical plane wave sprinkling type, which includes a spray nozzle, rotary means for mounting said spray nozzle for rotary path spraying movement through an acute angle about a substantially horizontal axis, means for delivering water for continuous spraying through said nozzle in its various rotated positions, an impulse motor intermittently actuated by the sprayed water, means operably connecting said impulse motor for movement, concentrically of said substantially horizontal axis, to said spray nozzle and the means carrying same for step by step movement of the latter in either direction, and a reversing mechanism which reverses the direction of the rotary path step by step movement of said nozzle and the means carrying same when the latter has been moved a predetermined distance in either direction from the center of its path of travel.

10. A continuously varying upward spraying angle wave type sprinkler having a base adapted to rest on the ground, a tubular water inlet member supported in a substantially horizontal position by said base, means connecting said inlet member to a rotatable body member also supported by said base and having a substantially horizontal axis of rotation, a nozzle for delivering a jet of Water, said nozzle opening outward from the side of said body member and in communication with the interior of said water inlet member, said body member and the nozzle carried by same being rotatable about a substantially horizontal axis in either direction in limited amount, an impulse means oscillatable about said body member on a common axis therewith and carrying a pivoted flipper, said flipper being capable of being carried by said impulse means into said jet which will swing said impulse member and flipper out of said jet, spring means for urging said impulse means with its flipper in a direction to return said flipper into said jet, means carried by said body member and cooperating with said impulse means to rotatably move said body member with nozzle about said substantially horizontal axis step by step in one direction for each jet actuated swing of said impulse means,

and reversing means operating after said body member has moved through a predetermined angle about said substantially horizontal axis in either direction to move said body member with its nozzle by means of said impulse means and flipper step by step in the reverse direction.

11. A wave type sprinkler as set forth in claim 10, wherein said impulse member has mounted thereon a means with stop edges, and said reversing means on said body member has a pair of stops adapted to alternately contact with said stop edges of said impulse member to gradually shift said body member with its nozzle with each swing of said impulse member to the point where said reversing means operates to reverse the direction of rotation of said body member and the nozzle carried thereby about said substantially horizontal axis.

12. A wave type sprinkler having a base, an upwardly directed nozzle for continuously delivering a varying operating angle fan shaped jet of water under operating conditions, means pivotally mounting said nozzle for rotation on a substantially horizontal axis, said nozzle having an elongated narrow outlet substantially alined with said horizontal axis for delivering said fan shaped jet of water, an impulse means carrying a pivoted flipper, means pivotally mounting said impulse means coaxial with said horizontal axis of said pivotally mounted means carrying said nozzle, said flipper being capable of being carried by said impulse means into said jet to provide, through its reaction to said jet of water, step by step limited spraying angle rotary movement of said nozzle on said substantially horizontal axis, and reversing means operating after said nozzle has been moved through a predetermined angle in either direction.

13. A wave type sprinkler as set forth in claim 12, wherein there is an adjustable means supported on said base, coaxial with said substantially horizontal axis, and cooperating with said reversing means for predetermining the length of the spraying arc of said nozzle and the position of said are in the operating range of said sprinkler.

14. A wave type sprinkler as set forth in claim 12, wherein there is an adjustable position member, with an elongated slot, rotatable around the elongated narrow outlet of said fan shaped jet delivering nozzle, the rotary position of said elongated slot adjustable position member determining the sprayed jet stream Width within its range of operation.

15. In a wave type sprinkler, the combination of a base having an upright end portion, a hollow oscillatable body member, means for pivotally mounting said body member on a substantially horizontal axis extending over said base from said upright end portion, a nozzle assembly for projecting a water jet, said nozzle assembly being on one side of said body member and in communication with the hollow portion thereof, hollow means fitting into and rotatably supporting said body member in substantially horizontal position, said hollow means having an inlet passageway and an outlet passageway in communication with said hollow body member and its nozzle assembly, a frame member with an end closure also supported by said hollow means and oseillatable about said body member on said substantially horizontal axis, with said nozzle assembly being between said frame member and the end closure of same, said frame member and its end closure being an impulse rotatable means mounted concentrically of said substantially horizontal axis, a flipper, means pivotally mounting said flipper on said frame member and its end closure and between same, said flipper being capable of moving into said jet so that the jet will impinge said flipper and cause said frame member and its end closure to swing on its axis and carry said flipper out of said jet, spring including means for urging said frame member and its end closure in a direction to return said flipper into said jet, means carried by said body member and cooperating with said frame member and its .end closure to rotatably move said body member with its nozzle step by step in one direction, and reversing means, operating after said body member has moved through a predetermined angle about said substantially horizontal axis, to move said body member with its nozzle step by step in the reverse direction.

16. In a wave type sprinkler as set forth in claim 15, wherein the supporting of said frame member and its end closure on said hollow means comprises a bearing on said frame member rotatably fitting said substantially horizontal hollow means adjacent the upright portion of said base, and means at the outer end of said hollow means providing a bearing for said end closure member, said latter bearing being substantially coaxial with said bearing of said frame member.

References Cited in the file of this patent UNITED STATES PATENTS 1,864,892 Coles et al. June 28, 1932 2,084,585 Keith Jan. 22, 1937 2,228,720 Coles et al. Jan. 14, 1941 2,256,737 Englehart Sept. 23, 1941 2,647,801 Lycon Aug. 4, 1953 2,691,547 Campbell Oct. 12, 1954 2,733,958 Warren Feb. 7, 1956 2,928,608 Royer Mar. 16, 1960 FOREIGN PATENTS 532,238 Great Britain Jan. 21, 1941 

